How did a little green nut become a billion-dollar product, lauded by celebrities in Super Bowl ads? Zachary Crockett cracks open the story. RESOURCES:"Almond Acreage Decline Prompts Industry Introspection," by Mitch Lies (West Coast Nut, 2023).American Pistachio Industry 2021 Annual Report, by American Pistachio Growers (2023)."California’s Agricultural Water Policies Are Nuts," by Douglas R. Noble (The Gainesville Sun, 2021)."Amid Drought, Billionaires Control a Critical California Water Bank," by Chloe Sorvino (Forbes, 2021)."Wonderful Pistachios Achieves Billion-Dollar Brand Milestone," press release by The Wonderful Company (2020)."Pistachios: The Quirks of Agricultural Trade in a Nutshell," by Andrea Durkin (Global Trade, 2020)."California Pistachios With Perfect Timing," by Mark Blackburn (The New York Times, 1979).